<template>
  <div class="recommend" ref="recommend">
    <scroll ref="scroll" class="recommend-content" :data="discList">
      <div>
        <div v-if="recommends.length" class="slider-wrapper" ref="sliderWrapper">
          <slider>
            <div v-for="item in recommends">
              <a :href="item.linkUrl">
                <!-- 用needsclick类来解决fastclick和better-scroll冲突，无法点击链接的bug -->
                <img class="needsclick" @load="loadImage" :src="item.picUrl">
              </a>
            </div>
          </slider>
        </div>
        <div class="recommend-list">
          <h1 class="list-title">热门歌单推荐</h1>
          <ul>
            <li @click="selectItem(item)" v-for="item in discList" class="item">
              <div class="icon">
                <img v-lazy="item.imgurl" width="60" height="60" alt="">
              </div>
              <div class="text">
                <h2 class="name" v-html="item.creator.name"></h2>
                <p class="desc" v-html="item.dissname"></p>
              </div>
            </li>
          </ul>
        </div>
        <div class="loading-container" v-show="!discList.length">
          <loading></loading>
        </div>
      </div>
    </scroll>
    <router-view></router-view>
  </div>
</template>
<script type="text/ecmascript-6">
import {
  getRecommend,
  getDiscList
} from 'api/recommend'
import {
  ERR_OK
} from 'api/config'
import Slider from 'base/slider/slider'
import Scroll from 'base/scroll/scroll'
import Loading from 'base/loading/loading'
import {
  playlistMixin
} from 'common/js/mixin'
import {
  mapMutations
} from 'vuex'

export default {
  mixins: [playlistMixin],
  data() {
    return {
      recommends: [],
      discList: []
    }
  },
  created() {
    this._getRecommend();
    this._getDiscList();
  },
  methods: {
    handlePlaylist(playlist) {
      const bottom = playlist.length > 0 ? '60px' : ''
      this.$refs.recommend.style.bottom = bottom
      this.$refs.scroll.refresh()
    },
    selectItem(item) {
      this.$router.push({
        path: `/recommend/${item.dissid}`
      })
      this.setDisc(item)
    },
    _getRecommend() {
      getRecommend().then((res) => {
        if (res.code === ERR_OK) {
          console.log(res.data)
          this.recommends = res.data.slider;
        }
      })
    },
    _getDiscList() {
      getDiscList().then((res) => {
        if (res.code === ERR_OK) {
          console.log(res.data.list)
          this.discList = res.data.list;
        }
      })
    },
    loadImage() {
      // 确保只执行一次
      if (!this.checkLoaded) {
        this.checkLoaded = true;
        this.$refs.scroll.refresh()
      }
    },
    ...mapMutations({
      setDisc: 'SET_DISC'
    })
  },
  components: {
    Slider,
    Scroll,
    Loading
  }
}
</script>
<style lang="scss" scoped>
@import "src/common/scss/variable";
.recommend {
  position: fixed;
  width: 100%;
  top: 88px;
  bottom: 0;
  .recommend-content {
    height: 100%;
    overflow: hidden;
    .slider-wrapper {
      position: relative;
      width: 100%;
      overflow: hidden;
      .loading-container {
        position: absolute;
        width: 100%;
        top: 50%;
        transform: translateY(-50%);
      }
    }
    .recommend-list {
      .list-title {
        height: 65px;
        line-height: 65px;
        text-align: center;
        font-size: $font-size-medium;
        color: $color-theme;
      }
      .item {
        display: flex;
        box-sizing: border-box;
        align-items: center;
        padding: 0 20px 20px 20px;
        .icon {
          flex: 0 0 60px;
          width: 60px;
          padding-right: 20px;
        }
        .text {
          display: flex;
          flex-direction: column;
          justify-content: center;
          flex: 1;
          line-height: 20px;
          overflow: hidden;
          font-size: $font-size-medium;
          .name {
            margin-bottom: 10px;
            color: $color-text;
          }
          .desc {
            color: $color-text-d;
          }
        }
      }
    }
  }
}
</style>
